From e13a39422df5b06349d33302f3e88f4dc0b8af22 Mon Sep 17 00:00:00 2001
From: Laurence Withers <lwithers@amethyst.(none)>
Date: Sat, 3 Jan 2009 23:07:40 +0000
Subject: [PATCH] Add some simple instructions

---
 README | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/README b/README
index 209c05e..f0de715 100644
--- a/README
+++ b/README
@@ -22,3 +22,23 @@ used to compile, dump or verify the contents of a table of leap seconds
 in a format suitable for loading with libiso8601.
 
 See http://www.lwithers.me.uk/usr/src/libiso8601/ for details.
+
+Instructions
+------------
+
+Use --help for usage info.
+
+In compile mode, it takes a text file (or stdin) with an ISO8601-format
+date on each line. Each date corresponds to a day with a positive leap
+second, e.g.:
+
+	2005-06-30
+	2005-12-31
+	2008-12-31
+
+This file is compiled into the binary format expected by libiso8601's
+iso8601_leap_table_load() function.
+
+In dump mode, the binary file is dumped into a text file. In verify
+mode, the library is used to load a compiled file, and some basic tests
+are performed to check the library behaviour matches what is expected.